Okay I am a novice when it comes to setting up bridging but I have been asked to help a friend who has his own mini ISP to create something that will work for him.
Here is the network layout.
there are 2 bridge-groups
BG1 contains 4 members
ATM1/0.364 Location1 (same as below)
BG2 contains 2 members
ATM1/0.369 Location1 (same as above)
Also there are 2 additional connections through this same router to the internet
ATM1/0.368 Location1 to the internet
ATM1/0.371 Location5 to the internet
Yes that means that Location1 has 3 connections to this router
1 for BG1
1 for BG2
1 for internet
Location5 has 2 connections.
1 for BG2
1 for internet
Currently bridging is setup as irb using the default ieee, but there are no BVIs implemented. As I understand it, if there are no BVIs in place then all traffic is bridged within a Bridge-group.
This is how we would like it to work, what we are seeing is that the traffic between bridge members is showing bad packet loss.
I was asked to maybe setup a BVI for each bridge-group and set IP routing to enabled for each BVI. But I am hesitant because I am not sure how this will affect the dedicated internet connections for "Location1" and "Location5" .
Yes you can make additional BVI to do routing, possibily one per PVC, however you have to consider customer addreses at the different locations is addressing network. Right now things are bridged around and is not very clear how these work, possibly they are using the same subnet everywhere, or they are doing NAT with the adsl modems/ router ?
Once you find out how to deal with address, you can configure one BVI per PVC, that will allow you to route between PVCs. All that should not affect internet in loc 1 and 5, because customer probably has set routing so that private network goes to another line, however you may want to get more details on that.
While you are at it, check which adsl/modem router they are using, if it supports routed encapsulation instead of bridged, things get even easier as you wouldn't need the BVI at all.
The problem you may have is that once you get into the details of customer's address, you may have to configure some routing to support them. With bridging, it would never be your problem.
This could interfere with other addresses, etc that your router is also supporting. If necessary, that can be solved using VRF that makes so that you configure a virtual router for certain interfaces only while other are excluded.
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